package com.itheima.mapper;


import com.itheima.pojo.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;


public interface UserMapper {

    @Select("select * from tb_user where username = #{username}")
    User findById(@Param("username") String username);
}
